Just to be clear, are you wanting to close your account and reactivate it later, when needed? Or are you wanting to place a message on your site indicating that it is temporarily unavailable, but keep your account open?The first option will bring your site and domain down and will also stop billing. You would need to reactivate the account by 11-17-2018 to prevent your domain from expiring. The second option will leave a message of your choice on your website and the account will continue billing. This will keep your domain on auto renew.